and then you can add/remove etc indicators
i have added one and set its initial props

click on the theme to chose the lock indicator color

click on the image property drop down to select which cursor (there are 20 to chose from)

if you want a text message displayed along side the twirly , under message settings , set visible=true and enter your message

To associate the indicator to the calculate button, click the button an in obj inspector under
jqbuttonoptions->onclick->indicator hit the drop down and select the lockindicator comp

If you have one or more indicators item , it will default to 0
If you have more , set it to the lockindicator item index value you require
for this form we just have the 1 indicator , so indicatorIndex=0 is fine

Thats it
I used the following icon

on your machine , but of course you can change it

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Regards
Sean Webb